When is the pipe character, I, used in search strings?

When is the pipe character, I, used in search strings?
A . Before clauses. For example: stats sum(bytes) | by host
B . Before commands. For example: | stats sum(bytes) by host
C . Before arguments. For example: stats sum| (bytes) by host
D . Before functions. For example: stats |sum(bytes) by host

View Answer

Answer: B

Explanation:

Reference: https://docs.splunk.com/Documentation/Splunk/8.0.3/Search/Aboutsearchlanguagesyntax#Quotes_and_escaping_characters